esophagus e·soph·a·gus or oe·soph·a·gus (ĭ-sŏf'ə-gəs)n.pl.e·soph·a·gi (-jī', -gī') The portion of the digestive canal between the pharynx and stomach, consisting of a cervical part from the cricoid cartilage to the thoracic inlet, a thoracic part from the thoracic inlet to the diaphragm, and an abdominal part below the diaphragm to the stomach.